. >> hat about that next debate, nancy between vice president joe biden and paul ryan. is the campaign concerned at all about that debate? >> reporter: i think they are a little concerned, norah, because they know that paul ryan is an aggressive debater. however, biden has been on the debate stage before. the problem with biden, as you know, he has a tendency to go off message from time to time so that's something they are a little bit worried about, especially because they can't afford another bad night. >> nancy, i'm struck by your comment that they say he didn't bring his a-game. any explanation why the president would have the first debate and not bring his a-game? >> reporter: this is something, gayle that afflicts a lot of sitting presidents. they have bad first debates. you saw this with george w. bush. george h.w. bush. for some reason presidents who live in this kind of cloistered environment where they are not challenged on a day-to-day basis, they get into debate prep, they get into that one on one situation with another candidate and just don't feel challeng